इन्जिनियरिङ सेवा सिभिल इन्जिनियर (सातौँ तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – सिभिल इन्जिनियर (सातौँ तह)
Civil Engineer – 7th Level · Engineering Service
१,९४० प्रश्न उपलब्ध। मोड छान्नुहोस्:
प्राविधिक पत्र: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ५ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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In GIS, the raster data model represents geographic features as:
सही उत्तर: क) A grid of cells (pixels), each holding a value
Raster data uses regular cells, whereas vector data stores features as points, lines and polygons.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The atmospheric correction applied to EDM distances depends mainly on:
सही उत्तर: घ) Air temperature and pressure
The speed of the electromagnetic wave depends on the refractive index of air, which varies with temperature and pressure (and humidity).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A microwave EDM instrument (such as a tellurometer) differs from an infrared EDM mainly in that it:
सही उत्तर: घ) Requires a similar active instrument (remote unit) at the far end instead of a passive reflector
Microwave systems use a master and a remote unit, each transmitting and receiving, whereas infrared EDMs use passive prisms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A reflectorless total station is able to:
सही उत्तर: क) Measure distances to surfaces directly without a prism
Reflectorless EDM uses a laser that reflects off ordinary surfaces such as walls, useful where a prism cannot be placed.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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If h is the ellipsoidal height from GNSS and N is the geoid undulation (geoid height above the ellipsoid), the orthometric height H is:
सही उत्तर: क) H = h − N
Orthometric height above the geoid (≈ mean sea level) equals ellipsoidal height minus the geoid height.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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GPS satellites orbit the earth at an altitude of approximately:
सही उत्तर: ख) 20,200 km
GPS satellites are in medium earth orbit at about 20,200 km, completing two orbits per sidereal day.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In GNSS positioning, a low value of PDOP indicates:
सही उत्तर: ग) Good satellite geometry and better position accuracy
Position Dilution of Precision reflects satellite geometry; widely spread satellites give a low PDOP and more accurate fixes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The reference datum (ellipsoid and coordinate system) used by GPS is:
सही उत्तर: ख) WGS 84
GPS coordinates are expressed in the World Geodetic System 1984 (WGS 84).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Real-time kinematic (RTK) GNSS surveying can give centimetre-level positions because it uses:
सही उत्तर: ख) Carrier-phase measurements with real-time corrections from a base station
RTK resolves carrier-phase ambiguities using corrections broadcast from a nearby base station, giving cm accuracy in real time.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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GLONASS is the global navigation satellite system of:
सही उत्तर: ग) Russia
GLONASS is Russian; GPS belongs to the USA, BeiDou to China and Galileo to the EU.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।